Effects of Ta content on thermodynamic properties and transformation temperatures of shape memory NiTi alloy

F Dagdelen, M Kok, IN Qader - Metals and Materials International, 2019 - Springer
In the present work, Ni 32-x-Ti-Ta 18+ x (x= 0, 2, 3, 4, 5, 6, 7, 8) shape memory alloys,
produced by arc-melting method. Then, differential scanning calorimetry (DSC), optical …

Transformation behavior in NiTi–20Ta and NiTi–20Nb SMAs: transformation temperatures, microstructure and micro-hardness

F Dagdelen, Y Aydogdu - Journal of Thermal Analysis and Calorimetry, 2019 - Springer
Abstract Shape memory alloys Ni 30 Ti 50 X 20 (at.% X= Nb, niobium, and Ta, tantalum)
were produced through arc-melting method. Phase transformation temperatures were …

Exploring surface oxidation behavior of NiTi–V alloys

E Acar, M Kok, IN Qader - The European Physical Journal Plus, 2020 - Springer
Non-isothermal oxidation behavior of Ni 50 Ti 49.6 V 0.4 (at.%) and Ni 50 Ti 46 V 4 (at.%)
polycrystalline alloys was investigated through thermogravimetric analysis. Differential …

The relationship between cobalt amount and oxidation parameters in NiTiCo shape memory alloys

SS Mohammed, M Kök, ZD Çirak, IN Qader… - Physics of Metals and …, 2020 - Springer
Coating shape-memory alloys (SMAs) with a ceramic layer is an important way by which
metallurgists change some physical properties and improve biocompatibilities of (SMAs) for …

Additively manufactured NiTi and NiTiHf alloys: estimating service life in high-temperature oxidation

H Dabbaghi, K Safaei, M Nematollahi, P Bayati… - Materials, 2020 - mdpi.com
In this study, the effect of the addition of Hf on the oxidation behavior of NiTi alloy, which was
processed using additive manufacturing and casting, is studied. Thermogravimetric …

In vitro bio-testing comparative analysis of NiTi porous alloys modified by heat treatment

E Marchenko, G Baigonakova, K Dubovikov, O Kokorev… - Metals, 2022 - mdpi.com
The present work is aimed at studying the surface cytocompatibility of porous NiTi obtained
by self-propagating high temperature synthesis (SHS), and then annealed in air at 500 …

Effect of tantalum contents on transformation temperatures, thermal behaviors and microstructure of CuAlTa HTSMAs

E Ercan, F Dagdelen, IN Qader - Journal of Thermal Analysis and …, 2020 - Springer
In this study, CuAl 13− x Ta x (% mass x= 1; 1.5; 2; 2.5) shape-memory alloys were produced
through arc-melting method. Phase transformation temperatures were investigated by using …

Effect of boron element additions on microstructure, biocompatibility, and thermodynamic parameters of NiTi shape memory alloy

IN Qader, E Ercan, A Orhan - JOM, 2022 - Springer
In this study, the thermodynamic and microstructural effects of boron element on a Ni-riched
NiTi shape memory alloy (SMA) were investigated and the biocompatibility of the improved …

Repetitive Nanosecond Laser-Induced Oxidation and Phase Transformation in NiTi Alloy

H Choi, MY Na, I Jun, H Jeon, YC Kim, JW Park… - Metals and Materials …, 2024 - Springer
NiTi shape memory alloys, known as Nitinol, are highly valuable in medical fields for their
unique attributes, including superelasticity, wear resistance, and biocompatibility. Laser …

Thickness effects on the martensite transformations and mechanical properties of nanocrystalline NiTi wires

GA Baigonakova, ES Marchenko, MA Kovaleva… - Nanomaterials, 2022 - mdpi.com
This paper studied the features of the martensitic transformations and mechanical properties
of 40, 60, and 90 µm thick NiTi wires with nanocrystalline B2 structures. It was established …